There are a few video links showing the Law of Conservation of Mass.
The first two videos show the Law of Conservation of Mass in a closed container versus an open container when an alka-seltzer tablet is added to water. We see a chemical reaction occurring in both, but the sealed container will keep the gas and show that there is no change in the mass. The open container allows the release of the gas so we see a drop in the mass.
There are a few video links showing the Law of Conservation of Mass.
The first two videos show the Law of Conservation of Mass in a closed container versus an open container when an alka-seltzer tablet is added to water. We see a chemical reaction occurring in both, but the sealed container will keep the gas and show that there is no change in the mass. The open container allows the release of the gas so we see a drop in the mass.
Closed container
http://youtu.be/SMLQ5Omutdw
Open container
http://youtu.be/tpg5nQW8TIU
Below is the lab procedure for Lab 12.2 on the Law of Conservation of Mass
Conservation of Mass with two liquids
http://youtu.be/YpkAUtnK4yA
Conservation of Mass with a solute and a solvent that form a solution
http://youtu.be/EjJnj7MZ4bo